Why gulp collects pug and scss in 5 - 10 seconds?

Question

Building projects

My tasks are below. What should I change in them so that they rebuild only what I changed, and not everything that is?

gulp.task('jade', function() {
    return gulp.src('source/include/**/*.jade')
        .pipe(jade())
        .pipe(gulp.dest('public'));
});

gulp.task('styles', function () {
  return gulp.src('source/styles/scss/**/*.scss')
    .pipe(sass())
    .pipe(rename('all.min.css'))
    .pipe(gulp.dest('public/css'))
});

Answer 1

renameneed to do after dest.
Yes, and renaming all files into one is stupid. Glue into one first.